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Potential white-light long-lasting phosphor: Dy3+-doped aluminate
Abstract
The white-light long-lasting phosphor CaAl2O4:Dy3+ was prepared and investigated. The white-light afterglow spectra under the irradiation of 254 or 365nm are comprised of the blue light emission and the yellow light emission, originating from the transitions of F9∕24→H15∕26, F9∕24→H13∕26 in the 4f9 configuration of Dy3+. The afterglow can last 32min for the best sample with Dy-doped concentration of 2at.%. The decay curve and the thermoluminescence curve show to be a second-order process. Thermoluminescence curves exhibit a complicated structure in the range of 230–450K with the peaks at 244, 280, 310, and 346K. The two thermoluminescence bands peaking above room temperature have corresponding traps with the depths of 0.54 and 0.61eV, which are responsible for the afterglow emission at room temperature. This work provides a promising approach for the development of white-light long-lasting phosphor.
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Cited by
Long persistent phosphors—from fundamentals to applications
Li, Y., Gecevicius, M., & Qiu, J. (2016) · Chemical Society Reviews · doi:10.1039/c5cs00582e · Cited by 1,368
Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review
Van den Eeckhout, K., Poelman, D., & Smet, P. (2013) · Materials · doi:10.3390/ma6072789 · Cited by 578
Tan, H., Wang, T., Shao, Y., Yu, C., & Hu, L. (2019) · Frontiers in Chemistry · doi:10.3389/fchem.2019.00387 · Cited by 59
Metadata
- Authors
- Liu, B., Shi, C., & Qi, Z.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2005-05-05
- Volume
- 86
- Issue
- 19
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2070031730
- Cited by
- 172
- References
- 0
- FWCI
- 4.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liu, B., Shi, C., & Qi, Z. (2005). Potential white-light long-lasting phosphor: Dy3+-doped aluminate. Applied Physics Letters. https://doi.org/10.1063/1.1925778
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